Mayhem reigns supreme in the animated kingdom as whiz kid Jimmy Neutron and Timmy from "The Fairly Oddparents" swap places in each other's worlds.
Debi Derryberry
as Jimmy Neutron (voice)
Tara Strong
as Timmy Turner (voice)
Megan Cavanagh
as Judy Neutron (voice)
Mark DeCarlo
as Hugh Neutron (voice)
Rob Paulsen
as Carl Wheezer / Announcer (voice)
Jeffrey Garcia
as Sheen Estevez (voice)
Carolyn Lawrence
as Cindy Vortex (voice)
Crystal Scales
as Libby Folfax (voice)
Frank Welker
as Goddard (voice)
Susanne Blakeslee
as Wanda (voice)
Daran Norris
as Cosmo / Dad / Jorgen Von Strangle (voice)
Grey DeLisle
as Vicky / Principal Waxelplax (voice)
